Riveting machine for mattress borders



Sept 12, 1939- s. MARSACK ET AL 2,172,446

RIVETING MACHINE FOR MATTRESS BORDERS Sept. 12, 1939.A s. MARSACK ET A1.

RIVETING MACHINE FOR MATTRESS BORDERS Septflz, 1939. s MARSAC'K Er AL 2,172,446

RIVBTING MACHINE FOR MATTRESS BORDERS Sept. 12, 1939. s. MARSACK Er AL RIVETING MACHINE FOR MATTRESS BORDERS Filed NOV. 5, 1936 6 Sheets-Sheet 4 .nal /7 /Nm @Jy m w Sept. 12, 1939. s, MARSACK TAL 2,172,446

RIVETING MACHINE FOR MATTRESS BORDERS Filed Nov. 5, 1936 6 Sheets-Sheet 5 v y A 23%441 Q: ZM @j Sept 12, 1939- s. MARSACK |-.r A1.

RIVE'IING MACHINE FOR MATTRESS BORDERS Filed Nov. 5, 1956 6 Sheets-Sheet 6 vv-: T ff f6 f /0 55 526/ i l `\.5 Z/, l I

| i Q ./f 7j Patented Sept- 12, 1939 UNITED STATES PATENT OFFICE RIVETING MACHINE FOR MATTRESS BORDERS Sam Marsaek, Milwaukee, and William Loeier,

Jr., Sheboygan, Wis., assignors, by mesne assignments, to Marsack Patents Corporation, Milwaukee, Wis., a corporation of Delaware Application November 5, 1936, Serial No. 109,284

14 Claims. (Cl. 21S-0.5)

This invention relates to riveting machines and 2, illustrating a portion of the rivet feeding particularly to a machine for securing together means; the strips of material comprising mattress borders Fig. 6 is a further enlarged plan view of one of used in the manufacture of mattresses. the rivet feeding units illustrated in Figs. 3 and 5 One object of the present invention is to pro- 5, and taken substantially as indicated by the 5 vide a machine which will feed the several malines 6-,6 of Figs. 3 and 7; terials comprising a mattress border through the Fig. 7 is a sectional velevational view through machine intermittently in proper relation and, the rivet feeding unit shown in Fig. 6, and illusat suitable intervals, secure the materials totrating its relation to our novel rivet holding and l0 gether by transverse rows of rivets. driving means, theportion of Fig. '7 illustrating 10 Another object of the invention is to provide the feeding vmeans being taken substantially as novel means for holding and driving the rivets indicated by the line 1--1 of Fig. 6;

through the materials of the border during the Fig. 8 is a fragmentary sectional elevational intervals between the movements of the materials view similar to a portion of Fig. '7 showing various through the machine. parts of the rivet feeding means in changed posil5 Another object of the invention is to provide tion; novel means for automatically feeding rivets Fig. 9 is a front sectional elevational view of singly to said rivet holding and driving means a portion of the rivet feeding means taken sub`- and in proper position to be engaged by the stantiallyas indicated by the line 9 9 of Fig. 7;

driving means for projecting rivets through the Fig. 10 isa front sectional elevational view of 20 materials of the border to secure the materials a `portion of the rivet feeding means Vtaken as together. indicated by the line lil-I0 of Fig. '7;

Another object of the invention is to provide Fig. l1 is a fragmentary elevational view partly means for automatically actuating vthe rivet feedin Section of a portion of the structure illustrated ing and driving means in properly timed relation in Figs. 6, 7, 8, and l0, and taken substantially 25 for supplying rivets to the driving means to be as indicated by the lines ll-ii of Figs. 6 and l0; engaged thereby and inserted through the ma- Fig. 12 is a perspectiveview of a rivet supportterials of the border during the intervals between ing member and gate-cam associated therewith the intermittent movements thereof. and forminga part of the rivet feeding means;

A further object of the invention is to provide Fig. 13 is .a fragmentary perspective view of 30 novel means for insuring positive delivery of the upper end of a rivet chute. and stripping finrivets from the feeding means to the rivet driving .ger forming a partof the rivet feeding means; means, Fig. 14 is a vertical .sectional elevational view A still further object of the invention is to imthrough the rivet holding and driving means prove machines of the character described in shown in Figs. 3 and 7, certain of the structure 35 sundry details hereinafter referred to and parillustrated in Fing. 14 being shown in changed ticulariy pointed out in the appended claims. position from that shown in Fig. '1;

One embodiment of the present invention is Fig. 15 is a front elevational View, partly in shown for illustrative purposes in the ,accom- SGCQH 0f the Structure illustrated in Fig. 14, 40 panyng drawings, in which: the sectional portion being taken substantially 40 as indicated by the line l5-l 5 thereof;

Fig. 16 is a plan sectional view taken substantially as indicated by the line Hi-lof Fig. 14; Fig. 17 is a fragmentary sectional elevational 1 view of a portion of the mattress border materials 45 m Flg t secured together by rivets inserted therethrough Fig. 3 is an enlarged sectional elevational ,b

. a machine embod n features of the resent View taken substantially as indicated by the lines igventon. and yl g Y p Fig. 1 is a front elevational View of a mattress border riveting machine embodying features of the present invention;

Fig. 2 is a rear view of the machine illustrated 3 5 Cf Figs' and 25 Fig. 18 is a perspective view of a preferred type Flg- 4 1S a 51de elevatcnal VleW on a reduced of rivet used in the operation of the machine. 50 scale of the machine illustrated in Figs. 1 and 2, AS Shown in the drawings, the illustrative emand taken aS Viewed fIOIZl the Tight and left Sides bodimenl; 0f the present invention (golfnprsesy in thereof, respectively; general, a frame, indicated as a whole by the Fig. 5 is an enlarged sectional plan view taken numeral 2|, having a main drive shaft 22 rotatsubstantially as indicated by the line 5 5 of Fig. ably mounted therein and operatively connected 5,5

movements of the mattress border A through thev machine. n Y

The shaft 22 is also operatively'connected to rivet feeding means, indicated as a whole, by the numeral 26, designed for feeding rivets singly to therespective rivet holding means 25 in position to be engaged by the rivet driving means 24, and in proper relation to the movements thereof. e

For driving the machine and the various operating parts associated therewith from a suitable source of power, the main drive shaftV 22 is operatively related to a main driving pulley 21 (Figs.

1, 2, 3 and 4) having a belt' 28 thereon'connected to a suitable source of power, not shown, by which the machine may' be operated, the drive shaft 22 being connectable with the pulley 21 by suitable clutch mechanism 29 of a well known type, such, for example, as illustrated -and described in United States Letters Patent No..1,775, 534, issued to Max Marsack et al., September-9, 1930,*the clutch 29, in the present instance, being controlled by a lever 3l pivotally mounted at 32 (Fig. 4) on the frame 2l and connected to the clutch 29 by a rod 33 adapted normally to be held in raised position by a spring 34 (Fig, 1) for normally disengaging theY clutch and permitting free rotation of the drivingv pulley 21 without transmitting'motion to the main drive shaft 22, it being understood that when the rod 33 is drawn downwardly by the lever 3|, the clutch 29 will engage to rotate the shaft 22. j

Mattress border feed n For feeding the material of the mattress border A consisting of layers of fabric B and C anda filler D between a. lower guide 35 (Figs. 3 and 4) and a combined upper guide and presser foot 36, a pair of upper and lower feed rollers 31 and 38, respectively, are mounted on rotatable shafts 39 and 4 I, respectively, carried bythe frame2 I, the shafts 39 and 4l being provided, respectively, at one of their outer ends with inter-engaging pinions 42 and 43 (Figs. 1 and 4), the shaft 4I and pinion 43 having a ratchet 44 secured thereto and adapted to be engaged by a pawl 45 (Fig. 4) mounted on an arm 46 carried by a rock shaft 41 positioned in axial alignment with the shaft 4I. To the rock shaft 41 is secured an arm 48, to theV outer free end of which is connected the lower end of a rod 49, the opposite or'upper end of the rod 49 being adjustably connected to an arm 5I carried by the drive shaft 22 in a manner to be rotated therewith when the clutch 2`9.is in operative engaging position.

It will be observed from thef foregoing description that by an arrangement of the character described, the feed rollers 31 and 38 will be vintermittently rotated during each revolution of the shaft 22 in a manner to feed themattress border A through the machine intermittently, or in a step by step movement, the pawl and'ratchet oonnection 45-44 being operative only duringthe upward swing of the arm 5l. Y

Rivet feed For supplying rivets to the rivet feeding means 26, a plurality of containers 52 (Figs. 2 and 3), four containers being shown in the present instance, are mounted on the frame 2l, each of the containers having a rivet magazine 53 associated therewith for directing rivets from the respective containers to each of four rivet feeding devices comprising the feeding means 26. Each of the containers 52 is provided with a rotating brush 54 for agitating the rivets within the container in a manner to discharge and position them in the respective magazines 53, as clearly shown and more fully described in the above .mentioned Patent No. 1,775,534, the brushes 54,

in the present instance, being driven through a system or train of gearing 55 operatively connected toa shaft 56 having a pulley 51 secured thereto adapted to receive a belt 58 trained over a pulley 59 mounted on the shaft 22by which the Vbrushes 54 may be rotated during the rotation of the shaft 22.

For feeding the rivets singly or one at a time from adjacent the lower or discharge ends of the respective magazines 53, there are provided a plurality or series of rivet feeding devices slidably mounted on supporting blocks 6I (Figs. 6 and 7) adjustably mounted on rods 62 carried by the frame 2l, the blocks 6| being adjustable on the rods 62 for positioning the-feeding devices in proper relation to the magazines 53, and may be secured in desired position with respect to the rods 62 by means of set screws 63.

Each of the feeding devices (Figs. 5 to 13, in-

clusive) of which four are shown in the present instance (Figs. 2 and'5) comprises a rivet supporting member 64 slidably mounted to reciprocate on a block 6 l, and having bifurcated portions 65 positioned adjacent the lower discharge end of one of the magazines 53 in a manner to rreceive the rivets therefrom successively and in alignment with respect to each other when the supporting Vmember 64 and associated elements areV in the position shown in Fig. 7, the bifurcations 65 forming an elongated slot 66 adjacent the central longitudinal portion of the supporting member 64 for receiving the shank portions of the rivets mounted on theV bifurcations 65. For limiting the movement of the rivets along the supporting surface of the bifurcations 65 and to retain Vthem in proper position to be acted upon by the feeding devices, a yieldable pawl, indicated as a whole by the numeral' 61, is pivotally mounted at 68 on the block 6I, the lower end of the pivoted portion 69 being engaged by a spring 1I (Fig. 11) for normally urging the free end of the pawl into engagement with the rivet supporting upper surface of the bifurcations 65, as clearly illustrated in Figs. 7 and 11.

For separating or segregating the leading rivet vfrom an adjacent rivet of those positioned on `the rivet supporting member 64, a gate 12 is mounted on a head 13 having a pair of vertically disposed rods 14 connected thereto and slidablypositioned in apertures formed in the block 6|, the apertures having enlarged portions or counterbores 15 adapted, respectively, to receive springs 16 operative between the inner ends of the counterbores 15 and washers or nuts 11 secured to the lower end of the rods 14 for normally urging the gate 12 in a downward direction and in a manner to force a pairA of spaced ngers 18 (Fig. 9) on the lower edge of the-gate zbetween the head of a leadingrivet and an adjacent rivet head positioned on the supporting member 64, and to prevent wedging or jamming of the leading rivet head between the fingers '|8 and the pawl 87 when the gate 'l2 is moved downwardly by the springs 76, the pawl 67 is provided adjacent its free end with an inclined cam surface i9 by which the free end of the pawl may be lifted slightly against the action of the spring 71| to prevent any such wedging action.

For raising the gate 'I2 to permit' the rivets from the magazine to pass beneath the gate and into the position illustrated in Fig. '7, the rivet supporting member 64 is provided with a pair of gate operating cams, indicated as a whole by the numeral 8|, secured to the member 64 by means of screws Sia, each of the cams having a high portion 82 engageable with the gate for supporting the gate in raised position, and having a low portion 88 for permitting the gate to be lowered by the action of the springs 72, thereby projecting the fingers 78 between adjacent rivets on the supporting member 64', when the member 88 is moved to the left from the position shown in Fig. 7, or toward the position shown in Fig. 8, the higher and lower cam portions or surfaces 82 and 83 being connected by an inclined portion 88 to permit easy movement of the gate 'i2 from one surface to the other.

For removing the leading rivet segregated by the fingers 'i8 of the gate 'i2 from its position on the upper edges, of the bifurcations 85 when the supporting member 64 is moved to the left from the position shown in Fig. '7, or toward the position shown in Fig. 8, the inner or adjacent faces of the bifurcations 85 are provided with preferably inclined downwardly extending grooves 85 and also with recesses 86 (Figs. 6 and l2) adjacent the upper ends of the grooves 85 to permit the head of the leading rivet to drop into the grooves 85 when the rivet supporting member 84 is moved to the position shown in Fig. 8, at which time a pair of cam members 8i mounted on the bifurcations 85 will have been brought into engagement with a portion 88 of the pawl 8i in a manner to raise the free end of the pawl, as clearly illustrated in Fig. 8, thereby completely freeing the head of the leading rivet from any binding action between the gate l2 and cam portion i9 of the pawl, and leaving the rivet head free to drop through the space adjacent the recesses 88 into the grooves 85 in a manner to rest on guide fianges 89 formed by the lower sides or margins of the grooves 85. Thereafter, upon movement of the rivet supporting member 88 to the right from the position shown in Fig. 8, the head of the rivet on the guide 89 will be engaged by a stripping nger 8| extending into the slot 88 and forced along the guides 89 to a position where the rivet may enter an inclined chute 92 positioned in the block 8| by which the rivets are conducted to the rivet holding and driving means 25-24. In the event of any hesitancy on the part of the rivet to enter. the chute 82, rivet discharge cams 93 formed by the opposite or upper sides or margins of the grooves 85 will engage the head of the rivet and in conjunction with the stripping nger 9| acting as a guide will move the rivet into the chute, through which it will move by gravity to the rivet holding and driving means 25-24.

Upon the movement of the rivet supporting member 64 to the right from the position shown in Fig. 8, or in the direction just described for moving the leading rivet into the chute 92, and in a direction to position the supporting member |54 as shown in Fig. 7, the high portions 82 of the gate operating cams 8| will be brought into position beneath the gate '|2 and cause it to rise against the action of the springs 16, thereby moving the fingers '|8 out of the path of the rivet heads on the supporting member and permit the weight of the rivets in the magazine 53 to move `the next succeeding rivet into position against the surface 19 of the pawl 61 as illustrated in Fig. 7, after which the feeding operation just described is repeated to move the next leading rivet into the chute 92 when the rivet supporting member 84 is again moved toward the left from the position shown in Fig. 7, or toward the position shown in Fig. 8, to permit the then leading rivet to drop through the recesses 88 and into the chute 92 in the manner above described.

For actuating the rivet feeding means 28 by the main drive shaft 22 in properly timed relation with respect to the operation of the mattress border feeding rollers 31 and 38 and the rivet driving means 24, each of the rivet supporting members iii-i is pivotally connected adjacent one of its ends with one end of a link 94 (Figs. 2 and 3), the opposite ends of the links being connected to a shaft 9'5 supported adjacent its ends in the upper free ends of a pair of arms 98 secured to a rock shaft 97 suitably supported on the frame 2|, the opposite ends of the shaft 8i being provided with arms 98 having springs 99 connected thereto and to a portion of the main frame 2| for urging the shaft 9T and arms 98 in a clockwise direction (Fig. 3), and the rivet supporting member 84 toward the position shown in Figs. 6 and 7.

One of the arms 98 (Figs. 2 and 3) is connected to the lower end of a push rod |8| slidably mounted in a swinging support |82 pivotally mounted at |83 on a portion of the frame 2i, the upper end of the rod 8| being provided with an anti-friction roller |84 adapted to be engaged by the cam 585 (Figs. l and 3) secured to the main shaft 22 in a manner to actuate the rod |8| to reciprocate the sliding rivet supporting members 88 in the manner above described for feeding rivets from the magazines 53 to the chutes 92.

Rivet holder and driving means adjacent one of its ends and adapted to receive one end of a stud H2 to prevent rotation of the shank i539, the head |87 being provided with a screw threaded plug |3 engageable with the up-I per end of the shank |89 for determining the position of the shank with respect to the head, in f which position the shanky portion |89 of the driving member may be secured by rmeans of a set screw H8.

As clearly shown in Figs. 7 and 14, the shank portion |88 is provided with an elongated centrally disposed'recess ||5 and with oppositely disposed slots M8 extending through the Walls of the recess and adapted to receive a cross pin 1,

while the recess H5 is provided with a compres.

sion spring ||8 adapted to operate between the shaft ||1 for urging thelshaftnormally, into the lower end portion ofthe slots ||6, the relationship of the saddle ||9 with the reduced portion |2| of the shaft serving to retain the shaft against accidental displacement with respect to the shank portion |09 of the driving member. f

It will be observed by reference to Figs. 3, 1 and 14 that the pin |1 extends a substantial dis'- tance beyond the opposite sides of the shank portionV |09 and pivotally mounted on the projecting ends of the shaft are a pair of rivet holding elements |22 providing in effect Va split housing indicated as a wholeby the numeral |22a., clearly illustrated inV Fig. 15, the elements |22 being of substantially U-shaped cross-section, and cooperating to form a chamber |23 adapted to slidably receive a plunger portion |24, screw threaded into the lower end of the shank portion |09 of the rivet driving member |06, the plunger |24 being provided adjacent its lower end with a reduced portion |25 adapted to enter a pocket |26 of correspondingly reduced dimensions adjacentV and communicating with the chamber |23, the pocket |26 having a laterally extending inclined vpassage |21 associated therewithV and adapted, in the raised position of the driving member and split housing |22a, to communicate with andY form a continuation of the chute 92 for receiving rivets therefrom in a mannerrto conduct the rivets to the pocket 26 in position to be engaged by the reduced end portion |25 of the plunger |24, the pivoted elements |22 being provided adjacent the lower end of the pocket |26 with inwardly extending cam portions |28 for supporting the head of the rivet thereon, as illustrated in Fig. 7, until engaged by the lower end of the portion |25 to eject the rivet therefrom, through the material of the mattress border and into engagement with an anvil |29 mounted on the frame 2| beneath the mattress border for spreading and clinching the shank portion of the rivettas illustrated in Fig. 14.7`

' For actuating the head |01 in a manner to move the rivet driving member |06 and associated parts vertically, the head |01 is provided adjacent its upperside with a roller |3| adapted to engage an internal double faced cam |32 mounted on the shaft 22 in a manner to move the driving members in a vertical direction when the shaft 22 is rotated.

Adjustably mounted on the frame 2| are a pair of substantially parallel stop bars |33 against which the projecting ends of the pins ||1 of the respective rivet driving members |06 will engage in their downward movement under the influence of the spring ||8 and the shank portion |09 of the driving member, in a manner to arrestthe movement of the pin and split housing elements |22, the movement of the shank portion |09 of the driving member being permitted to continue due to the yielding of the spring ||8 and under the influence of the cam |32 in a Vmanner to cause'the reduced portion |25of the plunger |24 to engage a rivet supported on the cam portions |28 of the elements |22 and to project the rivet therefrom as illustrated in Figs. 14 and 15, the spring I8 yielding to permit such relative movement of the shank portion V|09 and the units |22, while the action of the stop bars |33 serv-es to Yposition the pin ||1 in the upper end portions of the slots ||6 as shown in Fig. 14. During the ejecting of a rivet from the pocket |26 in the 1 and 3) mounted on the shaft 22 and engageable with rollers |36 carried adjacent the upper ends of a pair of rods |31 connected adjacent their lower ends with the presser foot 36, there-V by holding the border material firmly against the guide 3,5, and while held in such position, the rivet driving member |06 is operated to project a rivet from the pocket |26 through the material of the border and into engagement with the an- Y vil |29 for spreading or heading the shank portion of the rivet, as clearly illustrated in Fig. 14. The rods |31 are provided with springs |31a operating between guideV brackets 2m on the frame 2| and a collar |3122 on the rods |31 for. moving the presser foot 36 to raised position.

For adjusting the stop bars |33 relatively to the movement lof the head |01, the opposite ends of the barsmay be secured to blocks |38 (Figs. l, 3, 7 and 14), and adjusting screwsV |39 passing freely through the blocks |38 may be screw threaded into bracketsr |4| rigidly secured to the frame 2| and the adjusting screws |39 secured in desired position by means of set screws |42,` as clearly shown in Figs. l and 3.

For counterbalancing the weight ofV the head |01 and rivet holding and driving means mounted thereon, in a manner to relieve the strain on the cam member |32, a pair of lever arms |43 (Fig. 1) are pivotally mounted, respectively, adjacent one of their ends to the frame 2|, as indicated at |44, the opposite end of the arms being connected by means of tension springs |45 (Figs. 1 and 5) with the head |01, the arms k|43 being intended to rest on compression springs" |46 mounted on a portion of the frame 2| and engaging the arms |43 intermediate their ends,

the base or supporting portion for the springs |46 being adjustable by means of adjusting screws |41, while the resiliency of the springs |46 permits of ampleY downward movement of the'Y head |01 and associated parts for driving the rivets through the mattress border material in the manner above described.

It will be observed from the foregoing description that thepresent invention provides a novel construction and arrangement whereby the mattress border material may be intermittentlyfed through the ,machine and rivets driven through the material automatically in spaced relation for securing the portions of the material together. Furthermore, that the present invention provides novel means for feeding the rivets singly or one at a time'in a manner to hold or support the rivets in proper position to be engaged by novel driving means for inserting the rivets through the material constituting the mattress border.

Obviously, the present invention is not limited to the precise construction and arrangement shownand described as the same may be variously'modified. Moreover, all the features of the invention need not be usedconjointly as the same may be used to advantage in variously different Letters Patent is:

1. A mattress border riveting machine com.- prising a frame, a main drive shaft rotatably mounted therein, an anvil mounted in said frame, feeding means operatively connected to said drive shaft for feeding the material to be operated upon intermittently through the machine above said anvil, a rivet guide and holder comprising a plurality of hingedly connected yieldablyseparab-le members having a chamber formed therein and operatively related to said material, a rivet driving member slidably mounted in said chamber and operatively related to said anvil, said rivet driving member being operatively ccnnected to said drive shaft in a'manner to be actuated thereby for moving said guide and holder downwardly toward said material and driving rivets intermittently through said material duririg the interval between the movements thereof, an adjustable stop for limiting the downward movement of said guide and holder, a plurality of cam surfaces on said guide operatively related to said rivet driving member during the downward movement thereof for separating the lower end portions of said hingedly connected guide members to discharge a rivet therefrom, and intermittently operated rivet separating and feeding means actuated by said drive shaft, said separating means having an inclined chute associated therewith for directing rivets singly and by gravity to said guide and holder and into position therein to be engaged by said rivet driving member.

2. A mattress border riveting machine comprising a frame, a rivet magazine mounted thereon, a rivet supporting member mounted on said frame adjacent the discharge end of said magazine for receiving rivets successively therefrom, means for segregating a single rivet from the other rivets on said supporting member, a discharge chute having a receiving end adjacent said supporting member, and means associated with said member for permitting the escape of rivets from the supporting member to said chute.

3. A riveting machine comprising a frame, a rivet magazine mounted thereon, a supporting block mounted on said frame, a rivet supporting member movably mounted on said block adjacent the discharge end of said magazine for receiving rivets successively therefrom, means for segregating the leading rivet from the other rivets on said supporting member, a discharge chute having a receiving end adjacent said supporting member, and means associated with said member and adapted to'be brought into operative relationship with said leading rivet by the movement of said member for permitting the escape of said leading rivet from the supporting member to said chute.

4. A riveting machine comprising a frame, a rivet magazine mounted thereon, a supporting block mounted on said frame, a pivot supporting member slidably mounted on said block adjacent the discharge end of said magazine for receiving rivets therefrom successively and in alignment with each other, a movable gate on said block for segregating the leading rivet from the other of said aligned rivets on said supporting member, a discharge chute having a receiving end adjacent said supporting member, and a recessed portion on said member adapted to be brought into operative relationship with said leading rivet by the movement of said member for permitting the escape of said leading rivet from the supporting member to said chute.

5. A riveting machine comprising a frame, a

rivet magazinemounted thereon, a supporting block mounted on said frame, a rivet supporting member slidably mounted on said block adjacent the discharge end of said magazine for receiving rivets therefrom successively and in alignment with each other, said supporting member having bifurcations adjacent one of its ends for supporting the heads of said rivets and forming a slot between the bifurcations adjacent the central portion of the member for receiving the shank portions of the rivets, a vertically movable gate on said block for segregating the leading rivet from the other of said aligned rivets on said supporting member, means for retaining said leading rivet against movement horizontally relative toy said gate, said bifurcations having downwardlyA extending grooves formed in their respective adjacent side portions and having recesses adjacent the upper ends of the respective grooves for receiving the head of said leading rivet when said recesses are brought into vertical alignment therewith by the movement of said rivet supporting member in one direction, a discharge chute in substantially the central longitudinal vertical plane of said slot and adapted for cooperative relationship with the lower end portions of the grooves formed in the respective bifurcations of said supporting member for receiving rivets therefrom, a stripper finger extending into said slot for guiding the rivets into said chute when the rivet supporting member is moved in the opposite direction, and rivet discharging cams on said bifurcations for moving said rivet into said chute during the movement of said supporting member in said opposite direction.

6. A riveting machine comprising a frame, a rivet magazine mounted thereon, a supporting block mounted on said frame, a rivet supporting member slidably mounted on said block adjacent the dischargeend of said magazine for receiving rivets therefrom successively and in alignment With each other, said supporting member having bifurcations adjacent one of its ends for supporting the heads of said rivets and forming a slotA between the bifurcations adjacent the central portion of the member for receiving the shank portions of said rivets, a vertically movable gate on said block for segregating the leading rivet from the other of said aligned rivets on said supporting member, yieldable means mounted on said block for retaining said leading rivet against movement horizontally relative to said gate, said bifurcations having downwardly .extending grooves formed in their respective adjacent side portions and having recesses adjacent the upper ends of the respective grooves for receiving the head of said leading rivet when said recesses are brought into vertical alignment therewith by the movement of said rivet supporting member in one direction, means on said supporting member and block respectively for actuating said yieldable retaining means, a discharge chute in substantially the central longitudinal vertical plane of said slot and adapted for co-operative relationship with the lower end portions of the grooves formed in the respective bifurcations of said supporting member for receiving rivets therefrom, a stripper finger extending into said slot and forming a continuation of a portion of said chute for guiding the rivets into the chute when the rivet supporting member is moved in the opposite direction, and rivet discharging cams on said bifurcations for moving said rivet into said chute during the movement of said supporting member in said opposite direction.

vn'il A riveting machineY comprising Ya f'ramefa rivet magazine mounted thereon, a supporting block mounted on said frame, a rivetsupporting member slidably mounted on said block adjacent Y thedischarge end of said magazine for receiving rivets therefrom successively and in alignment: With each other, said supporting member having bifurcations adjacent one of its ends for supportporting member, resilient meansoperatively'related to said gate and block and a cam on said supporting member for moving the gate into and out of operative engagement with the rivet heads on the supporting member, a yieldable pawl pivotally mounted on said block for retaining said leading rivet against movement horizontally relative to said gate, said bifurcations having downwardly extending grooves formed in theirvrespective adjacent side portions and having recesses adjacent theupper ends of; the respective grooves for receiving the head ofsaid leading rivet when said recesses are brought into vertical alignment therewith by the movement of said rivet supporting member in one direction, a second cam on said supporting member engageable with said pawl when the supporting member is moved in said one direction to remove the pawlfrom rivet retainingrposition, a discharge chute in substantially the central longitudinalvertical plane of said slot and adapted for co-operative relationship with the lower end portions ofthe grooves formed in the respective bifurcations of said supporting member for receiving rivetstherefrom, a v

stripper kfinger extending into said slot for guid-l ing the rivets into said chute when the rivet supporting member is kmoved inthe opposite direction, and rivet discharging camsron said bifurcations for moving said rivet ,into said chute during the movement of said supporting member in said opposite direction. I l

8,'A riveting machine comprising aV frame, a

lrivet magazine `mounted thereon, a supporting blockmounted on said frame, a rivet supporting member slidably mounted on'said block adjacent the discharge end of said magazine Vfor receiving rivets therefrom successively and in alignment with eachother, said supporting member-havingV bifurcations adjacent one of its ends for supporting the heads of said rivets and forming a slot between the bifurcations adjacent the longitudinal central portion of the -member for receiving the shank portions'of said rivets, a vertically movable gate on said yblock for segregating the leading rivet from the other of said aligned rivets on said supporting member, means for retaining said leading rivet against movement horizontally relative to said gate, said bifurcations having downwardly vextending grooves formed in their respective adjacent side portions and having recesses adjacent the upper ends of the Vrespective grooves for receiving the head of said leadingY rivet when said recesses are brought into vertical alignment therewithY by the movementV of said rivet supporting-member in one .direction, the

lower side portion of the respective grooves pro- Y viding rivet guides below said recesses, a discharge chute in substantially the central longitudinal vertical plane of said slot and adapted for cooperative relationship with the lower end portions of the grooves formed in the respective bifurcations of said supporting member for receiving rivets therefrom, and a stripper finger extending into said slot for stripping rivets from said guides and directing the rivets into said chute when the rivet supporting member is moved in the opposite V direction, the upper side portions of the respective grooves'providing rivet'discharging cams on said bifurcations for moving said rivet into said chute during the movement of said supporting member in said opposite direction.

9. A riveting machine comprising a frame, a rivet magazine mounted thereon, rivet feeding means adjacent the discharge end of said magazine for receiving rivets successively therefrom,

an inclined discharge chute having a receiving end adjacent said feeding means for receiving rivets singly therefrom, and rivet holding andV laterally inclined passage adapted to communi` cate with the discharge end of said chute for conducting rivets therefrom to said pocket to be held therein in position to be engaged by said driving member, resilient means for urging said cooperable elements toward each other, and a pair of cam portions on the respective rivet holder elements operatively related to said driving member for swinging said elements about their pivotal connection therewith during the relative longitudinal movement thereof in a downward direction with respectto said rivet holder. g

u l0. A riveting machine comprising a frame, a rivet magazine mounted thereon, rivet feeding means' adjacent the discharge end of said magachamber therein adapted to slidably receive said driving member during the relatively longitudinal movement of the driver and holder, said holder having a pocket provided with a laterally inclined passage adapted tocommunicate with the discharge end of said chute for conducting rivets therefrom to said pocket to be held therein` in position to be engaged by said driving member in its downward movement relatively to said holder, resilient means for urging said cooperable elements toward each other, and a pair of cam portions'on the respective rivet holder elements adjacent their lower ends adapted to be engaged by a rivet head for swinging said elements about their pivotal connection with Vsaid driving memberunder the influence thereof during the relative longitudinal movement of the driving member with respect to said rivet holder for projecting a rivet from said pocket. Y

11. A riveting machine comprising a frame, a drive shaft and a plurality of rivet magazines mounted thereon, a supporting block mounted on said frame, a plurality of reciprocating rivet supporting members operatively connected to said shaft and slidably mounted on said block adjacent the discharge ends of the respective maga- Zines for receiving rivets successively therefrom, a plurality of gates operatively related to said supporting members for segregating a single rivet from the other rivets on each of the respective supporting members, a plurality of discharge chutes mounted in said block and having receiving ends adjacent the respective rivet supporting members, means associated with said rivet supporting members for permitting the escape of rivets therefrom to said chutes, a vertically reciprocating head slidably mounted on said frame and operatively connected to said drive shaft, and a plurality of transversely aligned rivet holding and driving means adjacent the discharge ends of said chutes, each of said holding and driving means comprising a driving member rigidly secured to said head, a rivet holder mounted on said driving member for movement therewith and relatively movable longitudinally with respect thereto, said holder having a chamber therein adapted to slidably receive said driving member and having a pocket adapted to communicate with one of said chutes for receiving rivets therefrom and to hold said rivets in position to be engaged by said driving member.

12. A riveting machine comprising a frame, a drive shaft and rivet feeding means mounted on said frame, rivet holding and driving means on said frame operatively related to said. feeding means, said rivet holding and drivmg means comprising a vertically reciprocating head on said frame operatively connected to said driving shaft, a rivet driving member adjustably mounted in said head, a rivet holder connected to said member and movable therewith and relatively thereto, said holder having a pocket therein operatively related to said feeding means for receiving rivets therefrom, and a stop adjustably mounted on said frame for arresting the downward movement of said holder under the iniiuence of the downward movement of said driving member, the connection between said rivet driving member and holder including a slot and resilient member for permitting continued movement of said driving member to eject a rivet from said holder after the movement of the holder has been arrested by said stop.

13. A riveting machine comprising a frame, a drive shaft and rivet feeding means mounted on said frame, rivet holding and driving means on said frame operatively related to said feeding means, said rivet holding and driving means comprising a vertically reciprocating head on said frame operatively connected to said drive shaft, a rivet driving member having an elongated recess and transversely disposed slots formed therein, a pin extending transversely through said slots and recess, a rivet holder mounted on said pin and having an elongated chamber adapted to receive said driving member, said holder having an elongated chamber adapted to receive said driving member, said holder having a pocket therein operatively related to said feeding means for receiving rivets therefrom in position to be engaged by said driving member, a stop adjustably mounted on said frame and engageable by said pin for arresting the downward movement of said holder under the influence of the downward movement of said driving member, and resilient means in said recess and operatively related to said pin for permitting the continued movement of said driving member to eject a rivet from said pocket after the movement of the holder has been arrested by said stop.

14. A riveting machine comprising a frame, a drive shaft and a plurality of rivet feeding means operatively related thereto mounted on said frame, a vertically reciprocating head on said frame operatively connected to said drive shaft, counterbalancing means operatively related to said head and frame, a plurality of rivet holding and driving means on said head operatively related to the respective feeding means, each of said rivet holding and driving means comprising a rivet driving member having an elongated centrally disposed recess and transversely disposed elongated slots formed therein, a pivot pin extending transversely through said slots and recess, a rivet holder comprising a pair of cooperable elements pivotally mounted adjacent their upper ends on said pin and cooperating to form an elongated chamber in said holder adapted to slidably receive said driving member, resilient means for urging said elements toward each other, said holder having a pocket therein operatively related to one of said feeding means for receiving rivets therefrom in position to be engaged by said driving member, a pair of stop bars adjustably mounted on said frame and engageable by said pin for arresting the downward movement of said holder under the inuence of the downward movement of said driving member, and a spring in said recess and operatively related to said pin for permitting the continued movement of said driving member to separate the lower ends of said element against the action of said resilient means and eject a rivet from said pocket after the movement of the holder is arrested by said stop bars.

SAM MARSACK. WILLIAM LOEFFLER, JR.

CERTIFICATE OF CORRECTION.

Patent No. 2,172,L4h6. 'september 12, 1959.

SAM MARSACK, ET AL.

.It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 5, first column, line 6l, claim LL, for the word "pivot" read rivet; and that the said Letters Patent should be read with-this correction therein that the `same may conform to the record of the case in the Patent Office.

Signed andsealed this 51st day of Oct0ber,.A. D. 1959.

Henry Van Ar sdale (Seal) Acting Commissioner of Patents. 

